Home / 104,139.24-143,711.40-56,391.88

Finding the Fourth Proportional to 104,139.24, 143,711.40 and 56,391.88

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Solution

The fourth proportional to 104,139.24, 143,711.40 and 56,391.88 is: 77,820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,139.24 : 143,711.40 = 56,391.88 : x
  2. Step 2: Convert to fraction form
    104,139.24/143,711.40 = 56,391.88/x
  3. Step 3: Cross multiply
    104,139.24x = 143,711.40 × 56,391.88
  4. Step 4: Simplify right side
    104,139.24x = 8,104,156,023.43
  5. Step 5: Solve for x
    x = 8,104,156,023.43/104,139.24
  6. Step 6: Final answer
    x = 77,820.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.